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1. 

   First Glances at New Books

   By Science NewsApril 5, 1930

2. 

   Front Matter

   Front matter for the March 29, 1930, edition of Science News-Letter.

   By Science NewsMarch 29, 1930

3. 

   Paralysis Caused by Unknown Poison

   By Science NewsMarch 29, 1930

4. 

   Bright Comet Discovered

   By Science NewsMarch 29, 1930

5. 

   Key to Ancient Animal Mysteries

   By Science NewsMarch 29, 1930

6. 

   Wanted: Early Planet Photographs

   With the discovery of the planet beyond Neptune, by Lowell Observatory astronomers, many months of observations will be needed before even an approximate idea can be obtained of the orbit in which it is moving.

   By Science NewsMarch 29, 1930

7. 

   Lower Costs and Higher Wages: A Classic Invention

   By Science NewsMarch 29, 1930

8. 

   In Various Science Fields

   By Science NewsMarch 29, 1930

9. 

   New Machine for Molding Cast Iron

   By Science NewsMarch 29, 1930

10. 

    Parrot Fever Work to Be Moved

    By Science NewsMarch 29, 1930

11. 

    Low Voltage Dangerous

    By Science NewsMarch 29, 1930

12. 

    Magnetic Hardening

    By Science NewsMarch 29, 1930